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Finding the Fourth Proportional to 906,990.54, 1,360,682.62 and 275,887.95

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Solution

The fourth proportional to 906,990.54, 1,360,682.62 and 275,887.95 is: 413,891.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,990.54 : 1,360,682.62 = 275,887.95 : x
  2. Step 2: Convert to fraction form
    906,990.54/1,360,682.62 = 275,887.95/x
  3. Step 3: Cross multiply
    906,990.54x = 1,360,682.62 × 275,887.95
  4. Step 4: Simplify right side
    906,990.54x = 375,395,930,449.58
  5. Step 5: Solve for x
    x = 375,395,930,449.58/906,990.54
  6. Step 6: Final answer
    x = 413,891.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.